The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/resource.h

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    1 /*-
    2  * Copyright (c) 1982, 1986, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)resource.h  8.4 (Berkeley) 1/9/95
   30  * $FreeBSD: releng/10.2/sys/sys/resource.h 242958 2012-11-13 12:52:31Z kib $
   31  */
   32 
   33 #ifndef _SYS_RESOURCE_H_
   34 #define _SYS_RESOURCE_H_
   35 
   36 #include <sys/cdefs.h>
   37 #include <sys/_timeval.h>
   38 #include <sys/_types.h>
   39 
   40 /*
   41  * Process priority specifications to get/setpriority.
   42  */
   43 #define PRIO_MIN        -20
   44 #define PRIO_MAX        20
   45 
   46 #define PRIO_PROCESS    0
   47 #define PRIO_PGRP       1
   48 #define PRIO_USER       2
   49 
   50 /*
   51  * Resource utilization information.
   52  *
   53  * All fields are only modified by curthread and
   54  * no locks are required to read.
   55  */
   56 
   57 #define RUSAGE_SELF     0
   58 #define RUSAGE_CHILDREN -1
   59 #define RUSAGE_THREAD   1
   60 
   61 struct rusage {
   62         struct timeval ru_utime;        /* user time used */
   63         struct timeval ru_stime;        /* system time used */
   64         long    ru_maxrss;              /* max resident set size */
   65 #define ru_first        ru_ixrss
   66         long    ru_ixrss;               /* integral shared memory size */
   67         long    ru_idrss;               /* integral unshared data " */
   68         long    ru_isrss;               /* integral unshared stack " */
   69         long    ru_minflt;              /* page reclaims */
   70         long    ru_majflt;              /* page faults */
   71         long    ru_nswap;               /* swaps */
   72         long    ru_inblock;             /* block input operations */
   73         long    ru_oublock;             /* block output operations */
   74         long    ru_msgsnd;              /* messages sent */
   75         long    ru_msgrcv;              /* messages received */
   76         long    ru_nsignals;            /* signals received */
   77         long    ru_nvcsw;               /* voluntary context switches */
   78         long    ru_nivcsw;              /* involuntary " */
   79 #define ru_last         ru_nivcsw
   80 };
   81 
   82 #if __BSD_VISIBLE
   83 struct __wrusage {
   84         struct rusage   wru_self;
   85         struct rusage   wru_children;
   86 };
   87 #endif
   88 
   89 /*
   90  * Resource limits
   91  */
   92 #define RLIMIT_CPU      0               /* maximum cpu time in seconds */
   93 #define RLIMIT_FSIZE    1               /* maximum file size */
   94 #define RLIMIT_DATA     2               /* data size */
   95 #define RLIMIT_STACK    3               /* stack size */
   96 #define RLIMIT_CORE     4               /* core file size */
   97 #define RLIMIT_RSS      5               /* resident set size */
   98 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
   99 #define RLIMIT_NPROC    7               /* number of processes */
  100 #define RLIMIT_NOFILE   8               /* number of open files */
  101 #define RLIMIT_SBSIZE   9               /* maximum size of all socket buffers */
  102 #define RLIMIT_VMEM     10              /* virtual process size (incl. mmap) */
  103 #define RLIMIT_AS       RLIMIT_VMEM     /* standard name for RLIMIT_VMEM */
  104 #define RLIMIT_NPTS     11              /* pseudo-terminals */
  105 #define RLIMIT_SWAP     12              /* swap used */
  106 
  107 #define RLIM_NLIMITS    13              /* number of resource limits */
  108 
  109 #define RLIM_INFINITY   ((rlim_t)(((uint64_t)1 << 63) - 1))
  110 /* XXX Missing: RLIM_SAVED_MAX, RLIM_SAVED_CUR */
  111 
  112 
  113 /*
  114  * Resource limit string identifiers
  115  */
  116 
  117 #ifdef _RLIMIT_IDENT
  118 static const char *rlimit_ident[RLIM_NLIMITS] = {
  119         "cpu",
  120         "fsize",
  121         "data",
  122         "stack",
  123         "core",
  124         "rss",
  125         "memlock",
  126         "nproc",
  127         "nofile",
  128         "sbsize",
  129         "vmem",
  130         "npts",
  131         "swap",
  132 };
  133 #endif
  134 
  135 #ifndef _RLIM_T_DECLARED
  136 typedef __rlim_t        rlim_t;
  137 #define _RLIM_T_DECLARED
  138 #endif
  139 
  140 struct rlimit {
  141         rlim_t  rlim_cur;               /* current (soft) limit */
  142         rlim_t  rlim_max;               /* maximum value for rlim_cur */
  143 };
  144 
  145 #if __BSD_VISIBLE
  146 
  147 struct orlimit {
  148         __int32_t       rlim_cur;       /* current (soft) limit */
  149         __int32_t       rlim_max;       /* maximum value for rlim_cur */
  150 };
  151 
  152 struct loadavg {
  153         __fixpt_t       ldavg[3];
  154         long            fscale;
  155 };
  156 
  157 #define CP_USER         0
  158 #define CP_NICE         1
  159 #define CP_SYS          2
  160 #define CP_INTR         3
  161 #define CP_IDLE         4
  162 #define CPUSTATES       5
  163 
  164 #endif  /* __BSD_VISIBLE */
  165 
  166 #ifdef _KERNEL
  167 
  168 extern struct loadavg averunnable;
  169 void    read_cpu_time(long *cp_time);   /* Writes array of CPUSTATES */
  170 
  171 #else
  172 
  173 __BEGIN_DECLS
  174 /* XXX 2nd arg to [gs]etpriority() should be an id_t */
  175 int     getpriority(int, int);
  176 int     getrlimit(int, struct rlimit *);
  177 int     getrusage(int, struct rusage *);
  178 int     setpriority(int, int, int);
  179 int     setrlimit(int, const struct rlimit *);
  180 __END_DECLS
  181 
  182 #endif  /* _KERNEL */
  183 #endif  /* !_SYS_RESOURCE_H_ */

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